package com.transaction.utils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/** 
	* @author gmwang E-mail: 
	* @version 创建时间：2018年6月26日 上午11:13:19 
	* 类说明  描述:公共日期工具类
*/
public class DateUtils {

	public static String DATE_FORMAT = "yyyy-MM-dd";

	public static String DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";

	public static String DATE_FORMAT_CHINESE = "yyyy年M月d日";

	/**
	 * 获取当前日期
	 * 
	 * 
	 * @return
	 * 
	 */
	public static String getCurrentDate() {
		String datestr = null;
		SimpleDateFormat df = new SimpleDateFormat(DateUtils.DATE_FORMAT);
		datestr = df.format(new Date());
		return datestr;
	}

	/**
	 * 获取当前日期时间
	 * 
	 * 
	 * @return
	 * 
	 */
	public static String getCurrentDateTime() {
		String datestr = null;
		SimpleDateFormat df = new SimpleDateFormat(DateUtils.DATE_TIME_FORMAT);
		datestr = df.format(new Date());
		return datestr;
	}

	/**
	 * 获取当前日期时间
	 * 
	 * 
	 * @return
	 * 
	 */
	public static String getCurrentDateTime(String Dateformat) {
		String datestr = null;
		SimpleDateFormat df = new SimpleDateFormat(Dateformat);
		datestr = df.format(new Date());
		return datestr;
	}

	public static String dateToDateTime(Date date) {
		String datestr = null;
		SimpleDateFormat df = new SimpleDateFormat(DateUtils.DATE_TIME_FORMAT);
		datestr = df.format(date);
		return datestr;
	}

	/**
	 * 将字符串日期转换为日期格式
	 * 
	 * 
	 * @param datestr
	 * @return
	 * 
	 */
	public static Date stringToDate(String datestr) {

		if (datestr == null || datestr.equals("")) {
			return null;
		}
		Date date = new Date();
		SimpleDateFormat df = new SimpleDateFormat(DateUtils.DATE_FORMAT);
		try {
			date = df.parse(datestr);
		} catch (ParseException e) {
			date = DateUtils.stringToDate(datestr, "yyyyMMdd");
		}
		return date;
	}

	/**
	 * 将字符串日期转换为日期格式 自定義格式
	 * 
	 * @param datestr
	 * @return
	 * 
	 */
	public static Date stringToDate(String datestr, String dateformat) {
		Date date = new Date();
		SimpleDateFormat df = new SimpleDateFormat(dateformat);
		try {
			date = df.parse(datestr);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return date;
	}

	/**
	 * 将日期格式日期转换为字符串格式
	 * 
	 * 
	 * @param date
	 * @return
	 * 
	 */
	public static String dateToString(Date date) {
		String datestr = null;
		SimpleDateFormat df = new SimpleDateFormat(DateUtils.DATE_FORMAT);
		datestr = df.format(date);
		return datestr;
	}

	/**
	 * 将日期格式日期转换为字符串格式 自定義格式
	 * 
	 * @param date
	 * @param dateformat
	 * @return
	 */
	public static String dateToString(Date date, String dateformat) {
		String datestr = null;
		SimpleDateFormat df = new SimpleDateFormat(dateformat);
		datestr = df.format(date);
		return datestr;
	}

	/**
	 * 获取日期的DAY值
	 * 
	 * 
	 * @param date
	 *            输入日期
	 * @return
	 * 
	 */
	public static int getDayOfDate(Date date) {
		int d = 0;
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);
		d = cd.get(Calendar.DAY_OF_MONTH);
		return d;
	}

	/**
	 * 获取日期的MONTH值
	 * 
	 * 
	 * @param date
	 *            输入日期
	 * @return
	 * 
	 */
	public static int getMonthOfDate(Date date) {
		int m = 0;
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);
		m = cd.get(Calendar.MONTH) + 1;
		return m;
	}

	/**
	 * 获取日期的YEAR值
	 * 
	 * 
	 * @param date
	 *            输入日期
	 * @return
	 * 
	 */
	public static int getYearOfDate(Date date) {
		int y = 0;
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);
		y = cd.get(Calendar.YEAR);
		return y;
	}

	/**
	 * 获取星期几
	 * 
	 * 
	 * @param date
	 *            输入日期
	 * @return
	 * 
	 */
	public static int getWeekOfDate(Date date) {
		int wd = 0;
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);
		wd = cd.get(Calendar.DAY_OF_WEEK) - 1;
		return wd;
	}

	/**
	 * 获取输入日期的当月第一天
	 * 
	 * 
	 * @param date
	 *            输入日期
	 * @return
	 * 
	 */
	public static Date getFirstDayOfMonth(Date date) {
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);
		cd.set(Calendar.DAY_OF_MONTH, 1);
		return cd.getTime();
	}

	/**
	 * 获得输入日期的当月最后一天
	 * 
	 * @param date
	 */
	public static Date getLastDayOfMonth(Date date) {
		return DateUtils.addDay(DateUtils.getFirstDayOfMonth(DateUtils.addMonth(date, 1)), -1);
	}

	/**
	 * 判断是否是闰年
	 * 
	 * 
	 * @param date
	 *            输入日期
	 * @return 是true 否false
	 * 
	 */
	public static boolean isLeapYEAR(Date date) {

		Calendar cd = Calendar.getInstance();
		cd.setTime(date);
		int year = cd.get(Calendar.YEAR);

		if (year % 4 == 0 && year % 100 != 0 | year % 400 == 0) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * 根据整型数表示的年月日，生成日期类型格式
	 * 
	 * @param year
	 *            年
	 * @param month
	 *            月
	 * @param day
	 *            日
	 * @return
	 * 
	 */
	public static Date getDateByYMD(int year, int month, int day) {
		Calendar cd = Calendar.getInstance();
		cd.set(year, month - 1, day);
		return cd.getTime();
	}

	/**
	 * 获取年周期对应日
	 * 
	 * @param date
	 *            输入日期
	 * @param iyear
	 *            年数 負數表示之前
	 * @return
	 * 
	 */
	public static Date getYearCycleOfDate(Date date, int iyear) {
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);

		cd.add(Calendar.YEAR, iyear);

		return cd.getTime();
	}

	/**
	 * 获取月周期对应日
	 * 
	 * @param date
	 *            输入日期
	 * @param i
	 * @return
	 * 
	 */
	public static Date getMonthCycleOfDate(Date date, int i) {
		Calendar cd = Calendar.getInstance();
		cd.setTime(date);

		cd.add(Calendar.MONTH, i);

		return cd.getTime();
	}

	/**
	 * 计算 fromDate 到 toDate 相差多少年
	 * 
	 * @param fromDate
	 * @param toDate
	 * @return 年数
	 * 
	 */
	public static int getYearByMinusDate(Date fromDate, Date toDate) {
		Calendar df = Calendar.getInstance();
		df.setTime(fromDate);

		Calendar dt = Calendar.getInstance();
		dt.setTime(toDate);

		return dt.get(Calendar.YEAR) - df.get(Calendar.YEAR);
	}

	/**
	 * 计算 fromDate 到 toDate 相差多少个月
	 * 
	 * @param fromDate
	 * @param toDate
	 * @return 月数
	 * 
	 */
	public static int getMonthByMinusDate(Date fromDate, Date toDate) {
		Calendar df = Calendar.getInstance();
		df.setTime(fromDate);

		Calendar dt = Calendar.getInstance();
		dt.setTime(toDate);

		return dt.get(Calendar.YEAR) * 12 + dt.get(Calendar.MONTH)
				- (df.get(Calendar.YEAR) * 12 + df.get(Calendar.MONTH));
	}

	/**
	 * 计算 fromDate 到 toDate 相差多少天
	 * 
	 * @param fromDate
	 * @param toDate
	 * @return 天数
	 * 
	 */
	public static long getDayByMinusDate(Object fromDate, Object toDate) {

		Date f = DateUtils.chgObject(fromDate);

		Date t = DateUtils.chgObject(toDate);

		long fd = f.getTime();
		long td = t.getTime();

		return (td - fd) / (24L * 60L * 60L * 1000L);
	}

	/**
	 * 计算年龄
	 * 
	 * @param birthday
	 *            生日日期
	 * @param calcDate
	 *            要计算的日期点
	 * @return
	 * 
	 */
	public static int calcAge(Date birthday, Date calcDate) {

		int cYear = DateUtils.getYearOfDate(calcDate);
		int cMonth = DateUtils.getMonthOfDate(calcDate);
		int cDay = DateUtils.getDayOfDate(calcDate);
		int bYear = DateUtils.getYearOfDate(birthday);
		int bMonth = DateUtils.getMonthOfDate(birthday);
		int bDay = DateUtils.getDayOfDate(birthday);

		if (cMonth > bMonth || (cMonth == bMonth && cDay > bDay)) {
			return cYear - bYear;
		} else {
			return cYear - 1 - bYear;
		}
	}

	/**
	 * 从身份证中获取出生日期
	 * 
	 * @param idno
	 *            身份证号码
	 * @return
	 * 
	 */
	public static String getBirthDayFromIDCard(String idno) {
		Calendar cd = Calendar.getInstance();
		if (idno.length() == 15) {
			cd.set(Calendar.YEAR, Integer.valueOf("19" + idno.substring(6, 8)).intValue());
			cd.set(Calendar.MONTH, Integer.valueOf(idno.substring(8, 10)).intValue() - 1);
			cd.set(Calendar.DAY_OF_MONTH, Integer.valueOf(idno.substring(10, 12)).intValue());
		} else if (idno.length() == 18) {
			cd.set(Calendar.YEAR, Integer.valueOf(idno.substring(6, 10)).intValue());
			cd.set(Calendar.MONTH, Integer.valueOf(idno.substring(10, 12)).intValue() - 1);
			cd.set(Calendar.DAY_OF_MONTH, Integer.valueOf(idno.substring(12, 14)).intValue());
		}
		return DateUtils.dateToString(cd.getTime());
	}

	/**
	 * 在输入日期上增加（+）或减去（-）天数
	 * 
	 * @param date
	 *            输入日期
	 * @param imonth
	 *            要增加或减少的天数
	 */
	public static Date addDay(Date date, int iday) {
		Calendar cd = Calendar.getInstance();

		cd.setTime(date);

		cd.add(Calendar.DAY_OF_MONTH, iday);

		return cd.getTime();
	}

	/**
	 * 在输入日期上增加（+）或减去（-）月份
	 * 
	 * @param date
	 *            输入日期
	 * @param imonth
	 *            要增加或减少的月分数
	 */
	public static Date addMonth(Date date, int imonth) {
		Calendar cd = Calendar.getInstance();

		cd.setTime(date);

		cd.add(Calendar.MONTH, imonth);

		return cd.getTime();
	}

	/**
	 * 在输入日期上增加（+）或减去（-）年份
	 * 
	 * @param date
	 *            输入日期
	 * @param imonth
	 *            要增加或减少的年数
	 */
	public static Date addYear(Date date, int iyear) {
		Calendar cd = Calendar.getInstance();

		cd.setTime(date);

		cd.add(Calendar.YEAR, iyear);

		return cd.getTime();
	}

	/**
	 * 將OBJECT類型轉換為Date
	 * 
	 * @param date
	 * @return
	 */
	public static Date chgObject(Object date) {

		if (date != null && date instanceof Date) {
			return (Date) date;
		}

		if (date != null && date instanceof String) {
			return DateUtils.stringToDate((String) date);
		}

		return null;

	}

	public static long getAgeByBirthday(String date) {

		Date birthday = stringToDate(date, "yyyy-MM-dd");
		long sec = new Date().getTime() - birthday.getTime();

		long age = sec / (1000 * 60 * 60 * 24) / 365;

		return age;
	}
	public static String getCurrentTimeMills() {
		long mills = new Date().getTime();
		return mills+"";
	}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// String temp = DateUtil.dateToString(getLastDayOfMonth(new Date()),
		/// DateUtil.DATE_FORMAT_CHINESE);
		// String s=DateUtil.dateToString(DateUtil.addDay(DateUtil.addYear(new
		// Date(),1),-1));
		long s = DateUtils.getDayByMinusDate("2012-01-01", "2012-12-31");
		System.err.println(s);
	}

}
